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11-22-2022, 09:39 AM
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#1
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2 Rivet Member
Sunnyvale
, California
Join Date: Apr 2020
Posts: 57
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Using Fridge when not level
Hi-
I have a 2017 Airstream FC23D with the original dometic fridge. It is parked on my driveway which is at a slope (front of RV is leaning down a bit after raising jack as far as I am comfortable).
Before trips I do turn on the fridge for a day or two and it has been working fine. I have noticed that if the RV is not level from left to right, the fridge will not get cold at all but a little leaning front to back did not have the same effect.
Is using the fridge when not level front to back going to damage my fridge? Reason I ask is that after several years now of doing this, we recently observed the fridge not working during our last trip. Trying to see if the use when not level is the issue or something else (I.e. age of the unit).
Thanks for any input.
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11-22-2022, 10:06 AM
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#2
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Rivet Master
2022 25' Flying Cloud
NCR
, Ontario
Join Date: Feb 2017
Posts: 3,108
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3 way fridges must be level
unlevel can be dangerous.
sometimes they can catch on fire
__________________
2023 25' FB FC, hatch, Queen, 30A, 1AC, Awning pkg, Convection uwave.
Multiplus 12/3000-50, 700A Lion, MPPT 100/30, Orion-TR 30, Cerbo GX,GX touch 50, Lynx distributor, dual BMV-712, smart shunt 500A&1000A, RUUVI temp/humidity sensors
NCR , Ontario, VE3HIU since 1978
WBCCI# 21212
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11-22-2022, 10:32 AM
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#3
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Rivet Master
2017 25' International
West Lake Hills
, Texas
Join Date: Dec 2020
Posts: 1,644
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Much better performance when level. We have found that we must level ours when in the driveway prepping for a trip. It is level left to right and front to back. One side sits on two two-bys. Tongue is nearly as low as it can go.
We’ve also noticed performance improving lately. Maybe it’s because we level it better than we used to. Maybe it’s the maintenance I performed on it.
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11-22-2022, 12:39 PM
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#4
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The Aluminum Tent 3
2014 23' Flying Cloud
Park City
, Utah
Join Date: Aug 2015
Posts: 2,157
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Level ALWAYS. It relies on gravity for the ammonia solution to flow through the system. If unlevel, the solution can overheat and form crystals. Over time the crystals can cause sporadic blockages and inhibit or prevent cooling. They can often be dislodged, and it will cool again — until it won’t. This can be a progressive process. The fix is eventually a new cooling unit.
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11-22-2022, 12:53 PM
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#5
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Site Team
1994 25' Excella
Waukesha
, Wisconsin
Join Date: Sep 2020
Posts: 5,581
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Definitely needs to be level, but doesn't need to be OCD level. Level enough for comfortable use of the trailer - if you're comfortable then it's level enough. Here's the instructions from my manual, and I don't believe it's changed all that much to the latest propane fridges.
__________________
Richard
11018
1994 Excella 25 Follow the build on Gertie!
1999 Suburban LS 2500 w/7.4L V8
1974 GMC 4108a - Custom Coach Land Cruiser (Sold)
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11-22-2022, 03:05 PM
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#6
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4 Rivet Member
2020 25' Globetrotter
Hillsdale
, New York
Join Date: Oct 2021
Posts: 290
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This is good information to know.
SPP
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11-22-2022, 03:28 PM
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#7
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Site Team
2009 25' FB International
2018 27' Globetrotter
Tavares
, Florida
Join Date: Mar 2014
Posts: 3,726
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I would assume this information about being level applies to any absorption fridge regardless of the source of the heat, propane, A/C or D/C from the battery.
But a compressor type fridge is not sensitive to being level. Correct?
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11-22-2022, 03:45 PM
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#8
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Rivet Master
1986 31' Sovereign
Miami
, Florida
Join Date: Feb 2004
Posts: 3,137
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Using Fridge when not level
That is correct. DC powered “danfoss” compressor style refrigeration was originally developed for marine applications.
So not at all sensitive to pitch, roll or yaw.
__________________
Sorta new (usually dirty) Nissan Titan XD (hardly paid for)
Middle-aged Safari SE
Young, lovely bride
Dismissive cat
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11-22-2022, 04:05 PM
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#9
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Rivet Master
1969 18' Caravel
Greenville
, whereEverIroam
Join Date: Dec 2017
Posts: 1,412
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Quote:
Originally Posted by pcskier
Level ALWAYS. It relies on gravity for the ammonia solution to flow through the system. If unlevel, the solution can overheat and form crystals. Over time the crystals can cause sporadic blockages and inhibit or prevent cooling. They can often be dislodged, and it will cool again — until it won’t. This can be a progressive process. The fix is eventually a new cooling unit.
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The other option, besides buying a new compressor fridge is to replace the coil assembly as outlined here in this article on this site.
The advantage to this approach is that if your trailer is old enough, it's very likely the new fridge won't fit into the same space, because they change dimensions every decade or so for reasons that have never been satisfactorialy explained to me. This means you can keep your existing fridge box, assuming it's still in good shape, and you won't have to cut or fill in any millwork around the perimeter or redo the base.
The purchase cost will also be much cheaper, but when you factor in your labor and time, it's a wash.
Another option is to replace the unit with a compressor unit which is way cheaper, but precludes boon docking unless you run a genny constantly or have a super expensive battery setup, which would negate any cost savings on the fridge by an order of magnitude or so.
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11-23-2022, 12:53 AM
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#10
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The Aluminum Tent 3
2014 23' Flying Cloud
Park City
, Utah
Join Date: Aug 2015
Posts: 2,157
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Using Fridge when not level
Quote:
Originally Posted by skyguyscott
The other option, besides buying a new compressor fridge is to replace the coil assembly as outlined here in this article on this site.
The advantage to this approach is that if your trailer is old enough, it's very likely the new fridge won't fit into the same space, because they change dimensions every decade or so for reasons that have never been satisfactorialy explained to me. This means you can keep your existing fridge box, assuming it's still in good shape, and you won't have to cut or fill in any millwork around the perimeter or redo the base.
The purchase cost will also be much cheaper, but when you factor in your labor and time, it's a wash.
Another option is to replace the unit with a compressor unit which is way cheaper, but precludes boon docking unless you run a genny constantly or have a super expensive battery setup, which would negate any cost savings on the fridge by an order of magnitude or so.
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That is what I was referring to when I mentioned a new cooling unit. I thought my fridge was toast and got a new Amish cooling unit last winter. Then my fridge came back to life so i have never installed the new unit yet. I know I have crystallized solution and it clogs the cooling lines now and then. I keep thermometers in the fridge and freezer sections and when I see things getting warm, I shut it off. When the lines cool, the blockage settles out and after a few hours restart the fridge and am back in business. I am full time, and dread removing the fridge to replace the cooling unit, so I keep putting it off and so far, so good.
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11-23-2022, 09:16 AM
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#11
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2 Rivet Member
Sunnyvale
, California
Join Date: Apr 2020
Posts: 57
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Quote:
Originally Posted by pcskier
That is what I was referring to when I mentioned a new cooling unit. I thought my fridge was toast and got a new Amish cooling unit last winter. Then my fridge came back to life so i have never installed the new unit yet. I know I have crystallized solution and it clogs the cooling lines now and then. I keep thermometers in the fridge and freezer sections and when I see things getting warm, I shut it off. When the lines cool, the blockage settles out and after a few hours restart the fridge and am back in business. I am full time, and dread removing the fridge to replace the cooling unit, so I keep putting it off and so far, so good.
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Thanks to all for the several very helpful responses. Much appreciated.
Was wondering if the crystals that develop when not level are permanent and just keep building up. Or do they transition back over time?
I have kept it off now while on my unlevel driveway. Will try turning it on when level again but am wondering if it will work or not.
Thanks!
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11-23-2022, 09:42 AM
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#12
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Rivet Master
2007 30' Classic
Oswego
, Illinois
Join Date: Jul 2010
Posts: 13,669
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Quote:
Originally Posted by joeysmith
Thanks to all for the several very helpful responses. Much appreciated.
Was wondering if the crystals that develop when not level are permanent and just keep building up. Or do they transition back over time?
I have kept it off now while on my unlevel driveway. Will try turning it on when level again but am wondering if it will work or not.
Thanks!
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Yes, the crystals are permanent and cumulative. A lot of information on gas absorption refrigerators here:
https://www.arprv.com/products.php
I do not know why the ARP unit does not get more attention on this forum. I consider it an essential piece of equipment.
(I am in no way affiliated with this company, just a user for about 7 or 8 years)
__________________
-Rich-
"If the women don't find you handsome, they should at least find you handy." - Red Green
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11-23-2022, 10:16 AM
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#13
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4 Rivet Member
Little falls
, New York
Join Date: Jul 2019
Posts: 457
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Quote:
Originally Posted by joeysmith
Hi-
I have a 2017 Airstream FC23D with the original dometic fridge. It is parked on my driveway which is at a slope (front of RV is leaning down a bit after raising jack as far as I am comfortable).
Before trips I do turn on the fridge for a day or two and it has been working fine. I have noticed that if the RV is not level from left to right, the fridge will not get cold at all but a little leaning front to back did not have the same effect.
Is using the fridge when not level front to back going to damage my fridge? Reason I ask is that after several years now of doing this, we recently observed the fridge not working during our last trip. Trying to see if the use when not level is the issue or something else (I.e. age of the unit).
Thanks for any input.
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I just try to use common sense. If you’re parked all crazy pointing up or down or leaning don’t run on propane. If your unit is comfy to walk in you're probably good.
No need to level your trailer using playing cards like some here insist.
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11-23-2022, 10:49 AM
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#14
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The Aluminum Tent 3
2014 23' Flying Cloud
Park City
, Utah
Join Date: Aug 2015
Posts: 2,157
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Quote:
Originally Posted by joeysmith
Thanks to all for the several very helpful responses. Much appreciated.
Was wondering if the crystals that develop when not level are permanent and just keep building up. Or do they transition back over time?
I have kept it off now while on my unlevel driveway. Will try turning it on when level again but am wondering if it will work or not.
Thanks!
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They are forever.
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11-23-2022, 11:58 AM
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#15
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2 Rivet Member
2001 16' Bambi
Albany
, NY
Join Date: May 2021
Posts: 27
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Peter thank you great explanation.
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11-23-2022, 12:30 PM
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#16
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3 Rivet Member
2021 27' Globetrotter
Tallahassee
, FL
Join Date: Sep 2020
Posts: 123
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As others have posted an absorption type fridge needs to be level.to properly work, yes it Will work off level but you do risk of the dreaded crystal formation from blocking passages in the cooling unit and.will.result.in a non functional cooling unit. Maybe get a tech to check and make sure there aren't other reasons for non operation. Do you get the same result whether you are on propane or electric. If it is the same then might.be time to.upgrade to a 12volt compressor fridge. We love our Norcold N8DC.
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11-23-2022, 12:56 PM
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#17
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Site Team
1994 25' Excella
Waukesha
, Wisconsin
Join Date: Sep 2020
Posts: 5,581
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I replaced the cooling unit in my 1994 Dometic propane fridge last year. The cooling unit was about $650 and the control board another $150. The control board was replaced as a precautionary measure while I was in the neighborhood working.
Took me about 4 hours total to change the cooling unit, only having help for a couple of steps along the way to move the fridge and lay it down as well as the final placement of the cooling unit onto the fridge.
All in all, if your fridge is otherwise in good condition and you determine that the cooling unit is bad you can get back to cold beer again in about 1/3-1/2 the cost of a new fridge (propane or 12v compressor.)
__________________
Richard
11018
1994 Excella 25 Follow the build on Gertie!
1999 Suburban LS 2500 w/7.4L V8
1974 GMC 4108a - Custom Coach Land Cruiser (Sold)
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11-24-2022, 06:06 AM
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#18
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Rivet Master
2013 31' Classic
billings
, Montana
Join Date: Feb 2010
Posts: 3,577
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I always make sure my trailer is level .. especially when the refrigerator is running. I have never had one go bad in 50 years
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11-24-2022, 08:44 AM
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#19
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Rivet Master
Currently Looking...
Sag Harbor
, New York
Join Date: Oct 2021
Posts: 602
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Quote:
Originally Posted by joeysmith
. . .
Is using the fridge when not level front to back going to damage my fridge?
. . .
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What does your owner's manual say about how level the fridge should be? [see attachment in Post #5]
Peter
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11-27-2022, 01:30 PM
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#20
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2 Rivet Member
2017 27' Flying Cloud
1994 21' Sovereign
Capitola
, California
Join Date: Sep 2007
Posts: 27
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Our original 2017 FC 27’ Dometic refrigerator was getting temperamental and then stopped working altogether.
We replaced the control panel and it’s back in operation. It was surprising as our previous AS 1994 refrigerator worked for 20 years without any issues.
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